在队列行进中,正步是司法警察的常用方法,行进速度为每分钟()。
A.110-116步
B.170-180步
C.116-122步
D.180-190步
参考答案:A
6000克=( )千克 4千克200克=( )克
In the good care of the nurses, the boy is_____ recovering from his heart operation.
A.fluently
B.actually
C.frequently
D.gradually